﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class SumUtils
    {
        private string name;

        public SumUtils(string name)
        {
            this.name = name;
        }

        public int zsxj(int num1,int num2) {
         return    num1 + num2;
        }
        public double zsxj(double num3,double num4)
        {
            return num3 + num4;
        }
        public string zsxj(string num5, string num6) {
            return num5 + num6;
        }
        public int zongshu(int num7)
        {
            int x = 1;
            for (int i = 0; i < num7; i++)
            {
                x = x + i;
            }
            return num7 + x;
        }
    }
}
